Country Blocking but not Searchengines (Verifying Googlebot)

Because our sites are hacked from many countries the country blocking feature is very good. But blocking USA is also blocking the google crawler.

It would be nice to have an exception for Useragents and/or IP Ranges. Block everything from the country except for the exceptions.

Another method Google recommends is reverse DNS Lookup:
https://support.google.com/webmasters/answer/80553?hl=en